
%coverage_dates_hash = (
"a0" => "before 2999 BCE",
"b0" => "2999-2900",
"b1" => "2899-2800",
"b2" => "2799-2700",
"b3" => "2699-2600",
"b4" => "2599-2500",
"b5" => "2499-2400",
"b6" => "2399-2300",
"b7" => "2299-2200",
"b8" => "2199-2100",
"b9" => "2099-2000",
"c0" => "1999-1900",
"c1" => "1899-1800",
"c2" => "1799-1700",
"c3" => "1699-1600",
"c4" => "1599-1500",
"c5" => "1499-1400",
"c6" => "1399-1300",
"c7" => "1299-1200",
"c8" => "1199-1100",
"c9" => "1099-1000",
"d0" => "999-900",
"d1" => "899-800",
"d2" => "799-700",
"d3" => "699-600",
"d4" => "599-500",
"d5" => "499-400",
"d6" => "399-300",
"d7" => "299-200",
"d8" => "199-100",
"d9" => "99-1",
"e-" => "1-99",
"e0" => "1-9",
"e1" => "10-19",
"e2" => "20-29",
"e3" => "30-39",
"e4" => "40-49",
"e5" => "50-59",
"e6" => "60-69",
"e7" => "70-79",
"e8" => "80-89",
"e9" => "90-99",
"f-" => "100-199",
"f0" => "100-109",
"f1" => "110-119",
"f2" => "120-129",
"f3" => "130-139",
"f4" => "140-149",
"f5" => "150-159",
"f6" => "160-169",
"f7" => "170-179",
"f8" => "180-189",
"f9" => "190-199",
"g-" => "200-299",
"g0" => "200-209",
"g1" => "210-219",
"g2" => "220-229",
"g3" => "230-239",
"g4" => "240-249",
"g5" => "250-259",
"g6" => "260-269",
"g7" => "270-279",
"g8" => "280-289",
"g9" => "290-299",
"h-" => "300-399",
"h0" => "300-309",
"h1" => "310-319",
"h2" => "320-329",
"h3" => "330-339",
"h4" => "340-349",
"h5" => "350-359",
"h6" => "360-369",
"h7" => "370-379",
"h8" => "380-389",
"h9" => "390-399",
"i-" => "400-499",
"i0" => "400-409",
"i1" => "410-419",
"i2" => "420-429",
"i3" => "430-439",
"i4" => "440-449",
"i5" => "450-459",
"i6" => "460-469",
"i7" => "470-479",
"i8" => "480-489",
"i9" => "490-499",
"j-" => "500-599",
"j0" => "500-509",
"j1" => "510-519",
"j2" => "520-529",
"j3" => "530-539",
"j4" => "540-549",
"j5" => "550-559",
"j6" => "560-569",
"j7" => "570-579",
"j8" => "580-589",
"j9" => "590-599",
"k-" => "600-699",
"k0" => "600-609",
"k1" => "610-619",
"k2" => "620-629",
"k3" => "630-639",
"k4" => "640-649",
"k5" => "650-659",
"k6" => "660-669",
"k7" => "670-679",
"k8" => "680-689",
"k9" => "690-699",
"l-" => "700-799",
"l0" => "700-709",
"l1" => "710-719",
"l2" => "720-729",
"l3" => "730-739",
"l4" => "740-749",
"l5" => "750-759",
"l6" => "760-769",
"l7" => "770-779",
"l8" => "780-789",
"l9" => "790-799",
"m-" => "800-899",
"m0" => "800-809",
"m1" => "810-819",
"m2" => "820-829",
"m3" => "830-839",
"m4" => "840-849",
"m5" => "850-859",
"m6" => "860-869",
"m7" => "870-879",
"m8" => "880-889",
"m9" => "890-899",
"n-" => "900-999",
"n0" => "900-909",
"n1" => "910-919",
"n2" => "920-929",
"n3" => "930-939",
"n4" => "940-949",
"n5" => "950-959",
"n6" => "960-969",
"n7" => "970-979",
"n8" => "980-989",
"n9" => "990-999",
"o-" => "1000-1099",
"o0" => "1000-1009",
"o1" => "1010-1019",
"o2" => "1020-1029",
"o3" => "1030-1039",
"o4" => "1040-1049",
"o5" => "1050-1059",
"o6" => "1060-1069",
"o7" => "1070-1079",
"o8" => "1080-1089",
"o9" => "1090-1099",
"p-" => "1100-1199",
"p0" => "1100-1109",
"p1" => "1110-1119",
"p2" => "1120-1129",
"p3" => "1130-1139",
"p4" => "1140-1149",
"p5" => "1150-1159",
"p6" => "1160-1169",
"p7" => "1170-1179",
"p8" => "1180-1189",
"p9" => "1190-1199",
"q-" => "1200-1299",
"q0" => "1200-1209",
"q1" => "1210-1219",
"q2" => "1220-1229",
"q3" => "1230-1239",
"q4" => "1240-1249",
"q5" => "1250-1259",
"q6" => "1260-1269",
"q7" => "1270-1279",
"q8" => "1280-1289",
"q9" => "1290-1299",
"r-" => "1300-1399",
"r0" => "1300-1309",
"r1" => "1310-1319",
"r2" => "1320-1329",
"r3" => "1330-1339",
"r4" => "1340-1349",
"r5" => "1350-1359",
"r6" => "1360-1369",
"r7" => "1370-1379",
"r8" => "1380-1389",
"r9" => "1390-1399",
"s-" => "1400-1499",
"s0" => "1400-1409",
"s1" => "1410-1419",
"s2" => "1420-1429",
"s3" => "1430-1439",
"s4" => "1440-1449",
"s5" => "1450-1459",
"s6" => "1460-1469",
"s7" => "1470-1479",
"s8" => "1480-1489",
"s9" => "1490-1499",
"t-" => "1500-1599",
"t0" => "1500-1509",
"t1" => "1510-1519",
"t2" => "1520-1529",
"t3" => "1530-1539",
"t4" => "1540-1549",
"t5" => "1550-1559",
"t6" => "1560-1569",
"t7" => "1570-1579",
"t8" => "1580-1589",
"t9" => "1590-1599",
"u-" => "1600-1699",
"u0" => "1600-1609",
"u1" => "1610-1619",
"u2" => "1620-1629",
"u3" => "1630-1639",
"u4" => "1640-1649",
"u5" => "1650-1659",
"u6" => "1660-1669",
"u7" => "1670-1679",
"u8" => "1680-1689",
"u9" => "1690-1699",
"v-" => "1700-1799",
"v0" => "1700-1709",
"v1" => "1710-1719",
"v2" => "1720-1729",
"v3" => "1730-1739",
"v4" => "1740-1749",
"v5" => "1750-1759",
"v6" => "1760-1769",
"v7" => "1770-1779",
"v8" => "1780-1789",
"v9" => "1790-1799",
"w-" => "1800-1899",
"w0" => "1800-1809",
"w1" => "1810-1819",
"w2" => "1820-1829",
"w3" => "1830-1839",
"w4" => "1840-1849",
"w5" => "1850-1859",
"w6" => "1860-1869",
"w7" => "1870-1879",
"w8" => "1880-1889",
"w9" => "1890-1899",
"x-" => "1900-1999",
"x0" => "1900-1909",
"x1" => "1910-1919",
"x2" => "1920-1929",
"x3" => "1930-1939",
"x4" => "1940-1949",
"x5" => "1950-1959",
"x6" => "1960-1969",
"x7" => "1970-1979",
"x8" => "1980-1989",
"x9" => "1990-1999",
"y-" => "2000-2099",
"y0" => "2000-2009",
"y1" => "2010-2019",
"y2" => "2020-2029",
"y3" => "2030-2039",
"y4" => "2040-2049",
"y5" => "2050-2059",
"y6" => "2060-2069",
"y7" => "2070-2079",
"y8" => "2080-2089",
"y9" => "2090-2099"
);
